RDCS BOARD EXAM REVIEW |ACTUAL QUESTIONS
AND VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
The moderator band is found in the:
A. Right atrium
B. Right Ventricle
C. Left atrium
D. Left Ventricle
CORRECT ANSWER
B. Right Ventricle
Question 2
In Sinus of Valsalva aneurysm, the coronary cusp most often affected is:
A. Right Coronary Cusp
B. Non Coronary Cusp
C. Left Coronary Cusp
D. Each coronary cusp is equally affected
CORRECT ANSWER
A. Right Coronary Cusp
Question 3
Associated anomalies of sinus of valsalva aneurysm include all the following EXCEPT:
A. Atrial Septal Defect
1
,B. Bicuspid aortic valve
C. Coarctation of the aorta
D. Ventricular septal defect
CORRECT ANSWER
A. Atrial Septal Defect
Question 4
Types of supravalvular aortic stenosis include:
A. Discrete fibromuscular stenosis
B. Hourglass deformity
C. Hypertrophic obstructive cardiomyopathy
D. Tumel aortic valve stenosis
CORRECT ANSWER
B. Hourglass deformity
Question 5
The difference between the transmitted and the reflected frequency is known as the:
A. Bernoulli equeation
B. Doppler principle
C. Doppler shift
D. Gorlin equation
CORRECT ANSWER
C. Doppler shift
2
,Question 6
Minor degrees of tricuspid regurgitation detected by doppler in structurally normal hearts:
A. Are a common finding
B. Are a rare finding
C. Depend on respiration
D. Vary greatly from one echo lab to another
CORRECT ANSWER
A. Are a common finding
Question 7
Pulmonary insufficiency as detected by cardiac Doppler in structurally normal heart is:
A. A rare finding
B. A common finding
C. An abnormal finding
D. Depend of expiration
CORRECT ANSWER
B. A common finding
Question 8
Inability of Doppler ultrasound waves to penetrate prosthetic valves is called flow:
A. Masking
B. Mapping
C. Convergence
D. Reverberation
CORRECT ANSWER
3
, A. Masking
Question 9
As a valve orifice narrows because of stenosis, pressure proximal to the stenosis will:
A. Decrease
B. Equilibrate
C. Increase with inspiration, decrease with expiration
D. Increase
CORRECT ANSWER
D. Increase
Question 10
The pressure drop between 2 chambers may be calculated by the formula:
A. CSA X TVI
B. 220 / Pressure half-time
C. 4 X V2 ^2
D. Transmitted frequency - received frequency
CORRECT ANSWER
C. 4 X V2 ^2
Question 11
The Doppler formula used to calculate systolic pulmonary artery pressure in a patient with
VSD is:
A. BPs - BPd X 4
4
AND VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
The moderator band is found in the:
A. Right atrium
B. Right Ventricle
C. Left atrium
D. Left Ventricle
CORRECT ANSWER
B. Right Ventricle
Question 2
In Sinus of Valsalva aneurysm, the coronary cusp most often affected is:
A. Right Coronary Cusp
B. Non Coronary Cusp
C. Left Coronary Cusp
D. Each coronary cusp is equally affected
CORRECT ANSWER
A. Right Coronary Cusp
Question 3
Associated anomalies of sinus of valsalva aneurysm include all the following EXCEPT:
A. Atrial Septal Defect
1
,B. Bicuspid aortic valve
C. Coarctation of the aorta
D. Ventricular septal defect
CORRECT ANSWER
A. Atrial Septal Defect
Question 4
Types of supravalvular aortic stenosis include:
A. Discrete fibromuscular stenosis
B. Hourglass deformity
C. Hypertrophic obstructive cardiomyopathy
D. Tumel aortic valve stenosis
CORRECT ANSWER
B. Hourglass deformity
Question 5
The difference between the transmitted and the reflected frequency is known as the:
A. Bernoulli equeation
B. Doppler principle
C. Doppler shift
D. Gorlin equation
CORRECT ANSWER
C. Doppler shift
2
,Question 6
Minor degrees of tricuspid regurgitation detected by doppler in structurally normal hearts:
A. Are a common finding
B. Are a rare finding
C. Depend on respiration
D. Vary greatly from one echo lab to another
CORRECT ANSWER
A. Are a common finding
Question 7
Pulmonary insufficiency as detected by cardiac Doppler in structurally normal heart is:
A. A rare finding
B. A common finding
C. An abnormal finding
D. Depend of expiration
CORRECT ANSWER
B. A common finding
Question 8
Inability of Doppler ultrasound waves to penetrate prosthetic valves is called flow:
A. Masking
B. Mapping
C. Convergence
D. Reverberation
CORRECT ANSWER
3
, A. Masking
Question 9
As a valve orifice narrows because of stenosis, pressure proximal to the stenosis will:
A. Decrease
B. Equilibrate
C. Increase with inspiration, decrease with expiration
D. Increase
CORRECT ANSWER
D. Increase
Question 10
The pressure drop between 2 chambers may be calculated by the formula:
A. CSA X TVI
B. 220 / Pressure half-time
C. 4 X V2 ^2
D. Transmitted frequency - received frequency
CORRECT ANSWER
C. 4 X V2 ^2
Question 11
The Doppler formula used to calculate systolic pulmonary artery pressure in a patient with
VSD is:
A. BPs - BPd X 4
4
